Skywatcher 8" Dobsonian telescope
by: xrapidx
Description: http://www.skywatchertelescope.net/swtinc/product.php?id=51&class1=1&class2=106The Sky-Watcher Dobsonian Telescope 203mm/1200mm (8") has a "paraboloidal" primary mirror to eliminate spherical aberration and a four-arm, secondary- mirror bracket with fine supports (0.5mm thick), to reduce diffraction spikes and light loss. In addition, this model include a 2" focuser with a 1.25" adapter, allowing the use of either eyepiece size. This model also include the new feature-tension control handle.Optical Design Newtonian (Parabolic) Lens Material Diameter 203mm Focal Length 1200mm Scondary Mirror Diameter 47mm F/ratio F/5.9 Highest Practical Power 406x Faintest Steller Magnitude 14.2 Resoving Power 0.56 Finderscope 9x50* Focuser diameter 2” with 1.25” adapter Diagonal Eyepiece(s) 1.25” Super 25 and 10* Mount Type Dobsonian Slow-motion Control Counterweight(s) Piggyback Bracket Accessory Tray Ground Board Diameter 52cm Ground Board Weight(s) Motor Drive Go-to Tube Weight 7.98Kgs Tube Dimension(dia. x length) 20.5cm x 112cm Tripod Height Shipping Weight 14.8 16.55 Kgs Shipping Carton Dimensions 67x 80 x 11 cm3 / 125 x 39.5 x 46.5 cm
by: xrapidx
Description: http://www.skywatchertelescope.net/swtinc/product.php?id=51&class1=1&class2=106The Sky-Watcher Dobsonian Telescope 203mm/1200mm (8") has a "paraboloidal" primary mirror to eliminate spherical aberration and a four-arm, secondary- mirror bracket with fine supports (0.5mm thick), to reduce diffraction spikes and light loss. In addition, this model include a 2" focuser with a 1.25" adapter, allowing the use of either eyepiece size. This model also include the new feature-tension control handle.Optical Design Newtonian (Parabolic) Lens Material Diameter 203mm Focal Length 1200mm Scondary Mirror Diameter 47mm F/ratio F/5.9 Highest Practical Power 406x Faintest Steller Magnitude 14.2 Resoving Power 0.56 Finderscope 9x50* Focuser diameter 2” with 1.25” adapter Diagonal Eyepiece(s) 1.25” Super 25 and 10* Mount Type Dobsonian Slow-motion Control Counterweight(s) Piggyback Bracket Accessory Tray Ground Board Diameter 52cm Ground Board Weight(s) Motor Drive Go-to Tube Weight 7.98Kgs Tube Dimension(dia. x length) 20.5cm x 112cm Tripod Height Shipping Weight 14.8 16.55 Kgs Shipping Carton Dimensions 67x 80 x 11 cm3 / 125 x 39.5 x 46.5 cm